2972981 has 4 divisors (see below), whose sum is σ = 3243264. Its totient is φ = 2702700.

The previous prime is 2972971. The next prime is 2973001. The reversal of 2972981 is 1892792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2972981 is a prime.

It is a super-2 number, since 2×2972981² = 17677232052722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135125 + ... + 135146.

It is an arithmetic number, because the mean of its divisors is an integer number (810816).

2^2972981 is an apocalyptic number.

It is an amenable number.

2972981 is a deficient number, since it is larger than the sum of its proper divisors (270283).

2972981 is a wasteful number, since it uses less digits than its factorization.

2972981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270282.

The product of its digits is 18144, while the sum is 38.

The square root of 2972981 is about 1724.2334528712. The cubic root of 2972981 is about 143.7906712895.

The spelling of 2972981 in words is "two million, nine hundred seventy-two thousand, nine hundred eighty-one".